Date: Sat, 3 Dec 2011 10:53:40 +0400
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: AMD X6 multicore issue
On Fri, Dec 02, 2011 at 04:58:53PM +0200, Caesarmv wrote:
> I got performance:
>
> * guesses: 0 time: 0:00:04:41 (3) c/s: 1752 trying: o2c - saban*
This is as expected.
> Is it possible to use version 1.7.9 with GPU?
Not 1.7.9 specifically, but yes:
http://openwall.info/wiki/john/GPU
You need to apply the john-1.7.8-allcuda-0.3.diff patch on top of the
1.7.8 release (non-jumbo). You can download 1.7.8 here:
http://download.openwall.net/pub/projects/john/1.7.8/
and the patch here:
http://openwall.info/wiki/john/patches
> What performance I will get with modern video card?
This gives about 4800 c/s on a GTX 460:
http://openwall.info/wiki/john/GPU#SHA512-based-crypt
Yes, you need an NVidia card for the current implementation.
You'll probably want to run two instances of John at once: one for your
GPU and the other for your CPU cores (maybe setting OMP_NUM_THREADS=5
will be more optimal then, leaving one CPU core for the GPU run - you'll
need to experiment with this).
Alexander